Fox Module 17: Unusual and influential data
(The attached PDF file has better formatting.)
Homework assignment: hat values
A statistician regresses the points Y = (5, 4, 3, 2, 1) on X = (1, 2, 3, 4, 15).
The five points are (1,5), (2,4), (3, 3,), (4, 2), and (15,1).
A. What is the mean hat value for these five points?
B. What is the range of hat values for these five points?
C. What are the hat values of the five points?